DEVICE AND METHOD FOR CORRECTING A PATH TROUBLE IN A COMMUNICATION NETWORK

摘要

In a disclosed backup path bandwidth reservation method for reserving bandwidth of a backup path to which an active path is switched when the active path becomes unavailable in nodes of a communication network, the method includes a backup path bandwidth reservation phase, for reserving M (M is a natural number equal to or less than L) channels of L (L is a natural number) channels reserved as backup path bandwidth, by notifying a destination-side node existing in a destination side of the backup path of identification number information of the M channels to be reserved and identification information indicating that a path for which the bandwidth is to be reserved is a backup path.